Impact of the stability constraint on the orbit of the BC companion. Top left: NAFF chaos indicator with respect to the semi-major axis of the stellar binary companion a_BC. The red zone depicts the area where the system configurations were flagged unstable. Bottom left: distributions of a_BC for both the stable (in green) and the unstable (in red) populations of systems. These two populations are delimited by the threshold value NAFF = −4.2. Top and bottom right: same for the orbital eccentricity of the stellar binary companion Ecc_BC.